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Senior Fullstack Developer (JavaScript)

Remote in Argentina, & 4 others
JavaScript (Fullstack)& 4 others
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We are looking for a Senior Fullstack Developer to join our team. In this role, you'll bridge business needs with technical execution across a distributed, cross-functional environment. You'll bring engineering rigor to fast-moving, ambiguous problems while helping shape how emerging technologies are adopted at scale. This is an opportunity to make a tangible impact on how enterprise systems evolve and connect.

Responsibilities
  • Coordinate closely with product owners and stakeholders across IT, Sales, Finance, and HR, aligning working hours to support real-time collaboration
  • Convert loosely defined internal use cases into clear architecture, UX/flow design, API contracts, and a development-ready backlog for the India-based team
  • Design and integrate agentic workflows connecting enterprise systems such as Salesforce, ServiceNow, Jira, Glean, and Oracle HCM
  • Take ownership of complex integration challenges, including authentication, MCP tool access, data contracts, RBAC configuration, error handling, and production cutover
  • Collaborate daily with the India-based pod, clarifying requirements, reviewing pull requests, resolving integration blockers, and safeguarding release quality
  • Build prototypes as needed, covering UI, agent flow, or MCP/LLM paths, then transition a production-ready backlog to the India team
  • Factor in security, observability, and reusability throughout the build process so each agent becomes a durable asset rather than a one-off demo
Requirements
  • 3+ years of hands-on, relevant experience as a full-stack engineer, with recent, active delivery work
  • Strong command of TypeScript/JavaScript paired with a modern frontend framework such as React or similar
  • Solid backend development experience using Node.js or Python, along with strong API and integration design skills
  • Demonstrated experience delivering AI/LLM-powered solutions, covering tool calling, RAG, agents, MCP, prompt workflows, or comparable production work
  • Background translating stakeholder workshop discussions into concrete architecture and an actionable, buildable backlog
  • Practical AWS delivery experience, including Lambda, API Gateway, ECS/EKS, S3, RDS/DynamoDB, IAM, and CloudWatch, along with enterprise authentication methods such as SSO/Okta and RBAC
  • Confident communicator able to lead technical discussions in English with US-based stakeholders, with working fluency at B2 level or higher, translating business requirements into agentic architectures
Nice to have
  • Familiarity with MCP gateways, LLM gateways, model routing, policy/audit mechanisms, and usage/cost control systems
  • Experience with OpenTelemetry or similar observability tools for tracking agent traces, tool calls, latency, and failure points
  • Background working with platforms such as Salesforce, Gong, Clari, Glean, ServiceNow, Oracle HCM, Concur, or similar HR/IT systems
  • Experience hardening internal platforms or prototypes into enterprise-ready, production-grade services